Question

Me ajudem e expliquem tb por favor:



a)  8+[(3-1)+2]

b)  9-[(8+4)-10]

c) 12-[8-(5+2)]-1

d)  [8-(2+2)]

e)  5+[9-(2-1)]

f)  20+[5+(3-1)]

g)  10+[8-(6-1)]

h)14-[6+(2-1)]

i)19+[10-(4+3)]

Answer 1

a)  8+[(3-1)+2] =   8 +2+2 = 12

b)  9-[(8+4)-10] = 9 - 12+10= 7

c) 12-[8-(5+2)]-1 = 12-8+7-1= 10

d)  [8-(2+2)]= 8 - 4 = 4

e)  5+[9-(2-1)]= 5 + 9-1= 13

f)  20+[5+(3-1)] = 20+5+2= 27

g)  10+[8-(6-1)]= 10+8-5=13

h)14-[6+(2-1)]= 14-6-1= 7

i)19+[10-(4+3)]= 19+10-7= 22